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Carefully tuned composite materials can have properties wholly unlike those of their separate constituents. We review the development of one example: colloid-stabilized emulsions with bicontinuous liquid domains. These non-equilibrium structures resemble the sponge mesophase of surfactants; however, in the colloid-stabilized case the interface separating the liquid domains is itself semi-solid. The arrangement of domains is created by arresting liquid-liquid phase separation via spinodal decomposition. Dispersed colloids exhibiting partial wettability become trapped on the newly created interface and jam together as the domains coarsen. Similar structures have been created in polymer blends stabilized using either interfacial nanoparticles or clay platelets. Here it has been possible to create the domain arrangement either by phase separation or by direct mixing of the melt. The low molecular weight liquid and polymer based structures have been developed independently and much can be learnt by comparing the two.
|Number of pages||18|
|Journal||Journal of Physics: Condensed Matter|
|Publication status||Published - 19 Mar 2008|
- COPOLYMER-NANOPARTICLE COMPOSITES
- CATASTROPHIC PHASE INVERSION
- CO-CONTINUOUS MORPHOLOGIES
- IMMISCIBLE POLYMER BLENDS
- MOBILE FILLER PARTICLES
- GRAIN-BOUNDARY SCARS
- IN-OIL EMULSIONS
- SPINODAL DECOMPOSITION
- BINARY BLENDS
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- 2 Finished
Edinbugrh Soft Matter and Statistical Physics Programme Grant Renewal
Cates, M., Poon, W., Ackland, G., Clegg, P., Evans, M., MacPhee, C. & Marenduzzo, D.
1/10/07 → 31/03/12
Edinburgh Soft Matter and Statistical Physics Group: Programme Grant
Cates, M., Ackland, G., Egelhaaf, S., Evans, M., Poon, W. & Pusey, P.
1/10/03 → 31/03/08